Lebanon’s Prime Minister Najib Mikati said there is no evidence that Al-Qaeda militants were operating in Lebanon, countering the defence minister's statement that the global network had sent operatives into the Lebanon-Syria border area.

"There is no firm evidence of an Al-Qaeda presence in Ersal (border area)," Mikati said Wednesday, according to Lebanon's state National News Agency.

"The military entered Ersal after being informed there was a person in the area who may have been tied to an international terrorist group but there was no information about the presence of any organised groups."

Lebanon has tried to distance itself from the events in Syria, where the uprising against President Bashar Al-Assad that started off as peaceful protests in March is now overshadowed by an armed insurrection.

Syria, grappling with a nine-month anti-government revolt, has blamed Al-Qaeda for a double car bomb attack on its capital last Friday that killed 44 people and wounded more than 100.

Assad says he is combating Islamist terrorism from abroad - a sensitive issue for neighbouring Lebanon.

Lebanese Defence Minister Fayez Ghosn said last week that Al-Qaeda insurgents were operating on the border disguised as Syrian opposition activists.

The interior minister later spoke out against the statement, denying there was an Al-Qaeda presence in Lebanon.

In his latest remarks, Mikati shrugged off the conflicting arguments as a difference of interpretation.

"It's not the first time there are differences of opinions inside the government," he said. "The interior minister said he had no information. The defence minister said he had some information but not complete proof."